8.5-.5-z=7

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Solution for 8.5-.5-z=7 equation: 


Simplifying
8.5 + -0.5 + -1z = 7

Combine like terms: 8.5 + -0.5 = 8
8 + -1z = 7

Solving
8 + -1z = 7

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-8' to each side of the equation.
8 + -8 + -1z = 7 + -8

Combine like terms: 8 + -8 = 0
0 + -1z = 7 + -8
-1z = 7 + -8

Combine like terms: 7 + -8 = -1
-1z = -1

Divide each side by '-1'.
z = 1

Simplifying
z = 1

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